Page 879 - Wurth Total Catalogue

pneumatic blind riveter care and maintenance

Replacing the Hydraulic oil
Use only Type 4,5 E/50 °C hydraulic oil.
• Connect the unit to compressed air.
• Screw out the filler screw 17 in the top part of the hydraulic housing
and remove together with the sealing ring 18.
• Hold the unit over a container, turn it on its head and pull the trigger 5.
The hydraulic oil runs out.
• Screw the brass bushing provided with the machine onto the plastic
syringe provided.
• Fill the syringe with hydraulic oil.
• Screw the syringe into the filler opening.
• Press the hydraulic oil into the machine.
• When resistance is noticeable, the unit is full.
• Remove the syringe.
• Close the filler opening with the filler screw 17 and the sealing ring 18.

Care and Maintenance: Malfunctions:
Maintenance of the Gripping Jaws: Gripping jaws do not hold or only after several actuations:
When the rivet pin is no longer tightly gripped or only after repeated • Clean the gripping jaws
attempts, the gripping jaws 12 must be cleaned, the hydraulic oil checked • Check/replace hydraulic oil
or the gripping jaws 12 replaced. • Replace gripping jaws
• Disconnect the pressure hose form the unit.
• Unscrew the outer sleeve 3. Removing jammed rivet pins:
• Clamp the unit in a vice on the wrench surfaces of the tension sleeve 8 • Disconnect the unit from compressed air
so that the top of the unit points downward. • Disassemble the tension mechanism, pin catching receptacle 1 and the
• Loosen the adaptor piece 14 with an open-ended wrench. rear screw connection.
• Unscrew the tension sleeve 8 by hand and remove the old gripping • With a suitable rod (approx. 250 mm long), push out the jammed rivet
jaws 12. pin to the front.
• Lightly grease the new gripping jaws 12 on the rounded outer side and • Check the suction jet 21 for damage and re-place if necessary.
insert into the tension sleeve 8. The points of the gripping jaws must
protrude at the front and the toothed surfaces must point to the middle. The Rivet Pin cannot be extracted:
• Screw on the tension sleeve 8 and tighten. • Use the correct mouthpiece and screw firmly.
• (PNG 121 A only) Adjust the distance (Z) between the front edge of • Check if the pin catching container is full and empty if necessary.
the tension sleeve 8 and the plastic housing (Fig. F): • Clean and oil the gripping jaws.
• Loosen locking nut 22 • Check if the rivet diameter and the crimping dimension is suitable for
• Adjust to a distance of 76.5 mm the machine.
• Tighten locking nut 22 • Check if too much hydraulic oil or air is in the machine.
• Screw on outer sleeve 3 and tighten.

Checking the Hydraulic oil:
The level of the hydraulic oil can be checked indirectly by checking the
stroke (dimension X):
• Unscrew the outer sleeve 3.
• Measure the distance between the end of the tension sleeve 8 and the
beginning of the hydraulic housing 16.
• Connect the unit to compressed air.
• Pull the trigger 5. The gripping mechanism moves backward.
• Again measure the distance between the end of the tension sleeve 8
and the beginning of the hydraulic housing 16.
AUS. pub. 08/10 © • If the stroke is too small, replace the hydraulic oil.
• The difference between the two measured values must correspond to
the stroke given in the tool specifications.

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